At night far from home. In Winter. Strong wind. Rain. On a hill. Torch or headlamp battery going flat as well. No hard shoulder and the wheel is on the off-side. Wheel-nuts still too tight from the last time a tyre-fitter replaced them with his air-spanner on maximum torque.
+++++++
Actually I shouldn't really joke about it like that.
Years back a friend took up the guitar and progressed to playing in a band. One night, returning from playing in a town about 80 miles from home, he was helping change a wheel on the band's van, at the side of a road notorious for its accident rate, when he was struck by a passing car. He did not survive...